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Back of my 70 YMCA C card. The front says scuba diver, no basic or advanced is mentioned. We were advised to not dive beyond the NDC limits. Both PADI and NAUI reduced NDC limits, example old Navy table was 60 ft/60 min. PADI and NAUI reduced it to 55min. I think the main controlling issue was...

I was certified by the YMCA in 1970 also. The only tables in use at that time was the US Navy tables. I think PADI was the first agency to have its own table. Not sure when probably late 70’s early 80’s.

All the people involved with setting up the training are no longer with us so we may never know. Here is where to start looking but the new web site is not working. L.A. County Scuba Launches New Website - California Diving News http://www.lacountyscuba.com/

I think you came as close as anyone can get. It was probably based on this page in the 1958 Navy diving manual.

Be assured there are no band clamps in a hardware store or any where else other than VDH.

Be assured there are no band clamps in a hardware store or any where else other than VDH.

SP2H Back row middle

The only issue I see is it appears the the 2nd lever is not located at the center line of the diaphragm where ideally it should be.

I'll add the large screw is the IP adjustment.

Ryan Spence has personal knowledge of all things Cousteau and many actual pieces of equipment used by the Cousteau team from work with the Cousteau foundation. I have dived with Ryan and seen some of the equipment in use by him at one of Vintage Double Hose events at Weeki Wachi springs. Ryan's...

It merely reverses the breathing characteristics of the regulator making exhalation harder and inhalation easier. As I said it was for show more than go when filming the Under Sea World of Jacques Cousteau series. Off camera divers wore standard gear. It is a triple tank rig Cousteau is wearing...

Ryan Spence has personal knowledge of all things Cousteau and many actual pieces of equipment used by the Cousteau team from work with the Cousteau foundation. I have dived with Ryan and seen some of the equipment in use by him at one of Vintage Double Hose events at Weeki Wachi springs. Ryan's...

Remains of the duckbill may be under the hose.

Most of the service parts are stock Aqua Lung aka US Divers The chest mounted second stage was more about theatrics than function. Cousteau was going for the innerspaceman look of the future.

This is the place you seek. Vintage Double Hose - Index page

As a retired ASW aircraft sonar operator I was looking for you.

If I had to pick one regulator for utter reliability it would be the Mistral.

For the record. The US Navy began ( early 1950's) using 3000 psi tanks long before they became common on the commercial market. They used the USD DA Navy as the standard regulator on these tanks.

US Divers commercial division sold a triple 72 set up in a triangular pattern using bar yokes and two sets of double bands to link them together. I think they were used as bail out cylinders for deep surface supplied dives.

Early J valve with metal ball seat. These would not completely shut off.